Barrel-recoil gun.



M. HERMSDORP.

BARREL RECOIL GUN.

APPLICATION FILED TERA, 1911.

Patented July 8, 1913 3 SHEETB-SHEET 1 M. HERMSDORF.

BARREL REGOIL GUN.

APPLICATION FILED IEBA, 1911,

1,066,814. Patented July 8,1913

3 SHEETS-SHBET 2.

ii? /T 3 R M. HERMSDORP.

BARREL RECOIL GUN.

APPLICATION FILED FEBA, 191 1.

Patented July 8, 1913.

3 SHEETS-511E151 3.

UNITED STATES P ZgENT OFFICE.

MAX HERMSDORF, OF ESSEN-ON -THE-RUHQR, GERMANY, ASSIGNOB. T0 FRIED. KRUPP I AKTIENGESELLSCHAFT; OF ESSEN-ON-THE-RUHR, GERMANY.

BARREL-RECOIL GUN.

Specification of Letters Patent.

PatentedJulyS, 1913.

Application filed February 4, 1911. Serial No. 606,593:

provements in Barrel-Recoil Guns, of whiclr the following is a specification.

This invention relates'to that class of barrel recoil guns which have, in addition to the running out gear, two accumulators one of which opens, and the other closes the breech mechanism,

The invention consists, first-and foremost,v

in such an arrangement of the accumulators that the gun barrel is able, to stress both of the accumulators when the gun runs out.

A consti'uctural example -ot the subject matter of the invention is shown in the drawing in which- Figure 1 is a side elevation, partially in section, of those parts ofthe gun affected by the present invention. The various parts are shown in the position which they assume when the gun barrel is in the firing position and the breech mechanism is closed. Fig. 2

is the rear elevation corilesponding to Fig. 1,'

' the gun barrchhas executed a certain portion of the recoil, Fig. 12 is a. similar plan showing the various parts in the position which they assume when the gun barrelhas exeouted a contain portion of the running out movement. Fig. 13 shows a'portion of Fig. 4 with. the parts in the position corresponding to Fig. 12, Fig. 14 is a similar view to Fig. 8, likewise with the parts iii the position corresponding to Fig. '12, Fig; 15 is a plan which'shows the various parts in the position they assume when the gun barrel is in the firing position and the breech mechanism wide open, Fig. 16 is a similar.

view to Fig. Bwith the parts in the position corresponding to Fig. 15, and Fig. 17 IS a horizontal section which re n'esents the iarts l l in the position which they assume immediately before loading. v The gun barrehA is mounted to slide upon the slide carrier B by means of the slide a and is connected by the'spur a? on the slide to the recoil brake and running out gear, (both of which. are not shown). The slide carrier B projects out beyond the frontface of the breech of the barrel when,

the gun barrel is in the firing position. The breech mechanism is a. horizontal wedge breech mechanism. The breech mechanism is opened and closed by a thrust lever C, which rotates upon a shaft C mounted vertically in the breech end of the gun barrel. The thrust lever C engages by means of a cam c in a thrust cam groove (2 in the breech wedge D. The ejector E is mounted upon a shaft 6 carried in the breech end of the gun barrel, see Figs. 1, 3, 15 and 17. It is provided with lugs c" which are adapt ed to cooperate in such a way with shouldersd arranged on the breech wedge D that the ejector E is rockedat the end of the outward movement of the breech wedge,.see Fig. 15. Upon the end of the'ejector shaft 6 whichprojects upward from the breech end of the gun barrel is fixed a lever (1 by the rotation of which the ejector can be rocked by band when the breech mechanism isopen- The ends of the e ector are provided with hook-shaped pro ections 6, see particularly Fig. 17. When the ejector is swung out of its position of rest these hooks can swing into recesses J in the breech wedge D.

Upon theupper end of the shaft- C is mounted a revolving drum F which is open at the top, and the bottom f of which bears against the breech end of the gun barreh Upon the bottom f of the drum is provided" a downwardly extending tubular projection f see particularly Fig. 4, which pro ects into a recess turned in the breech end of the:

barrel and coaxial with the shaft C. On this projection are two claws 'f, see also Fig. 9, which engage in recesses in the thrust lever C (which rotates on the shaft C), and connect it to the drum F so as to be incapable, of rotating with respect to the said drum. Upon the bottom f of the drum F lies a disk G, which is provided on its upper side with .i hub-like pro ection g.

This projection has internal ribs y. see Fig. 7, which engage in grooves 0'. see Figs. 4 8,

swe rs nected to it by the claws f on the projection f of the drurmare prevented from rotating in a direction contrary to the direction of the arrow .2 The projection on the stressing disk {I} is held by the spring H in contact with th stop face f of the recess 7 provided in the bottom f of the drum, see 8 and 10, so that the stressing disk G is prevented from rotating in the direction of the arrow .2 through the medium of the drum F which is itself prevented from rotating. As furthermore the stressing disk G is non-rotata bly connected to the shaft C, this shaft also together with the lever S mounted thereon are prevented from; rotating in the direction of the arrow In addition to this the shaft C is prevented from rotating in this stressed, and the projection a on the shaft.

direction because the projection-0" on its collar 0 bears against the stop face q of the recess 1 provided in the sleeve Q; After the shot has been fired, the gun barrel A recoils with the slide a on the slide carrier B. rVhen this happens the stop 8 on the lever S, strikes, when the latter has reached the position. indicated by dot and dash dines in Fig. 5) against the stop t on the lever T. The stop a, then sliding along the stop t, then throws the leverT over against the action of the spring V into the position shown in Fig. 11,v because, as has just been explained, the lever S is prevented from rotating is the direction of the arrow :0. As the gun continues to'rccoil the stop .5 releases the stop it, so that-the lever T returns to its position ofi rest under theaction of the spring V, the stop 6 on the'lever T beinp again brought into-contact with the stop n on the bearing When the gun barrel A runs out the stop 8- again strikes against the stop 1?, see theposition of the lever S indicated by dot and dash lines in Fig. 12. From thismoment, as the stop t now bears against the stop 12. and does not permit of rotation of the lever T in thef direction of the arrow 7 see Figs. 5 and 12, the lever S will be rotated: through the medium of the stops .9, I, in a direction opposite to that of the arrow 2: into the position indicated by. dotted lines in Fig; 12. are rotated the shaft C and the stressing disk G nonmotatably connected thereto. During this time the springs R and H are 0 moves in the recess q in the sleeve Q. \Vhen the strcssing disk G- rotates its.projec tion g moves int-he recess 1 in the bottom of the drum P out of thepositio'n shown in Figs. 8 and 10 into the position shown in Fig. 14. When this takes place the cotiperation of the edge g ofthe projection g with the inclined face 77 of the bolt head 7), causes this latter to be pressed against the action of the spring p into the aperture-a in the gun barrel. Immediately the projec tion 1; has slid over the bolt head p, that. is

lVith the lever S to say has arrived in the end position shown in Fig. 14, the bolt head 72' again emerges from the aperture a under the action of the spring 72 and places itself with its' locking face p in front of the projection g. The bolt P then. prevents the stressing disk and with it the shaft C from rotating them.- selves back into their original position under. the action of the ow strongly stressed springs H and R. \Nith the shaft C has also rotated the disk J non-rotatably connected thereto, aniLthc instant in which the stressing disk G has been secured by its projection g and the bol ,R'gthe projection z" provided with the inclined face i and situated on the disk J, has passed under the lug m on the locking pawl M and has lifted the locking lug m out of the recess a in the barrel against the action of the spring-m,

see Figs. 12 and 13. By this meansthegdrum F'isunlocked from the gun barrel so tliat the spring H can now eirpand and rotate, the

drum F in the opposite direction to thatof thearrow 11 until the position shown in I5 is reached. the thrust lever C connected thereto:. non

With the drum F is rotated rotatably by the claws f,.and ,by thisrmaans the breech mechanism opened (see -Fig; u1 5) ()n the above mentioned movement ofnthe' drum F, during which the-disk'J non-rota.

tably connected to the shaft C has remained;

at rest, the lug m on the pawl M which takes l part in the rotary movement ofthe dr1im F, has moved out of engagement,withj'theg.

projection i on the (iia, .The'locking' ing the rotation of the drum moved i'ntocontact with the upper face of the breech end ofthe gun barrel under the-action :of :the:.

e latter in sudden-rotation in While the opening spring v H is expanding-,

and the drum F has rotated in the oppositedirection' to that of the arrow .11, the closing spring R has remained stressed, because the stressing disk G and the shaft C nonpotatablyconnected thereto were prevented a 1 from rotating in the direction of the arrow a: through the medium of the projection g? on the stressing disk and the bolt 1 To- Ward the end of the rotary movement of the r drum F caused by the opening spring H,

the lower edge 1"" of the top face] on the bottom f of the drum, strikesagainstthe inclined' face 7) onthe bolt head f. Here upon the bolt head f is pushedinto the aperture 0 in the gun barrel against the; action of the spring 7) through the coopcration of the edge f with the. inclined face .7), passing finally right under the bottom f of yes i in its outermost open position (see Fig. .At the same time the projection g on the stressing disk G has been brought out of engagement with the locking face 72 on the bolt head 75 byv the depression of the'latter into the recess a in the breech end ofthe barrel, so that the connection between the 'disk. G and the breech end of the gun barrel is broken and the closing spring R can now expand. in expanding it rotates the-stress ing, disk G through themedium of the shaft (3 in the direction of the-arrow Theprojectio'n g on the stressing disk G carriesithe drurn' F which latter is rotated in the direction to close the breech mechanism through the medium of the claws f on the thrust lever C. These movements are. however interrupted, when the Wallsof the notches d which are situated in the breech wedge D and run transversely to the direction of movement of the la'ttenstrike a s'inst the hook-shaped projections e on the e ector. At thismoment thepartessume the position shown in Fig. 17, i. 6., theloading position. If nowthe gun be loaded, the ejector- E will be rocked so far by'therim of the cartridge case that its projections e are brought out of'eng a'gement witir the notches d of the breech wedge 'D. There. is therefor no longersny'hindi'ance to the expansion of the closing spring R, so that by means of the shaft C, the stressing disk G; the projection and the drum F it rotstcs'the thrust lever C in the direction of the arrow :2 and effects I the closing'ofth'e breech mechanism, Vv'ith the shaft (J and the drum F rotates also the disk J, so that its projection '2' remains out of engagement with the lug m of the pawl M. lVnenthe'se movementsoccur, the projection of -t'he -stressing disk Ghas slid over the bolt head 7/ and .thebolt head has again passed under the action ofthe spring 72 into the recess f in the bot-tom f of the drum, Furthermore the locking lug m on the pawl M'has moved along on the'upper face of the breech end of the-fgun b'arrel ,up to the notch a and has p'ed into the notch again under :'j tlrc" shite i the spring in.

The 'parts githeg '{l ssume the position shown in 1' to" I .If'the breech mechanism is to "be closed Without the gun being previously loadedrthe projections e on the ejector-E are brpught out of engagement with the notches (i -1n the:

breech wedge D by rotating the ejector by means of the lever c. 4

If the breech mechanism is to 'be iizmiked by hand, the handle f on the drt is taken hold of, whereby the locking in m; on the locking pawl hi is brought out in engsgeinent with the notch at. The'handle f is then rotated in the opposite direction to that of the arrow s (Fig; 5'). This opens the breech mechanism through the medium of the thrust lever C which is non-rotatably connected to the drum F by the claws f. The stressing disk G and the shaft C rotate with the drum F through the medium of the stop face f on the recess i and the projection y so that the closing spring R is stressed. The stress of the opening spring H does not change here as'the stressing disk G and drum I rotate simultaneously by the same amount. At the end of the opening movement of the breech mechrnisrn the parts assume the position shown in 15 and 16. The locking of the breech mechanism in the loading position (thr-ou b the ejector E) and the closing of the .JIEGCh mechanism under the action of the spring R take place in the manner above described.

If itbe desired to separate from the gun barrel the parts mounted thereon and serving to automatically open and close the breech mechanism, the nut is loosened. The drum F together with the pawl M, the disks G and J and the spring-H can then be at once drawn upward off the shaft C. The spring H retains however its initial stress because it is so attached to the drum F and the stressing disk G, that 't tends to rotate them relatively to the'drmn the direction of the arrow :0, andlsd otation of the stressing disk G is prevented by its stop 9 bearing against the sto face f on the bottom f of the drum. n the "other hand after loosening the nut K, the shaft G together Withthe sleeve Q and the spring R can be withdrawn out of the breech end ofthe gun barrel without the shaft-G- becoming detached seqnently the tension or stress ofthespring R is maintained. This is sofbecause' these parts are retained in their normal position by the spring R which forces-the inclined face 0 of the projection c on the shaft G into contact withthe --'correspondingly beveledistop tace f in the recess 9 of the sleeve Q. The two ec'c'iimnlators whielieffmt the opening and closing'of the breech from the sleeveQand con- 7 1 mechanism can therefore he qnickiydind easily removed from the gun barrel mr is manifest without any further tion, be likewise remounted on thegiiiii gbar-1 I rel agaim' iwithout its being 'f necessa'r end "B stress or let down the spriiig's I-chiimz 4 1 1-. Aiecoil' gun havin'ga recuperate ad two accumulators, one ot-which eccllniu'ih tors operates to open end the other-meiosis the breech, and meansfwbereby 'botir-acct mulators are tensioned during't-he runningout movement of the gun barrel.

A recoil gun having it recrlpersitor; twfh accumulators, one ofwhichbperatesto open and the other to close the breech, and means vsimuhancousl v tensioning both accumulator. bv the running-outs. movement of the gun barrel. romprising a pair of cooperating almtnafiits, one of which is mounted on the gun barrel and the other on the gun mount.

A recoil gun having a recuperator, two zwumulators, one of which operates to open and lilo other to close the breech, and means imultaneouslv tcnsioning both accumula laws. comprising a tensioning abutment having Minot-(ions through which it tensions accumulators, and a cooperating abutment on a non-recoiling part of the gun, re- ,--i.- ting the tcnsioning abutment in the direction to cause tcnsioning of tie accumulators. but yielding thereto in the opposite direction.

1. In a barrel recoil gun, a lever for actuating the breech block, a shaft concentric with the fulcrum of said lever, a recuperator. two torsional spring-accumulators adapted respectively to open and close the breech. the springs of these accumulators being mounted co-axially with said shaft and tensioned tne running-out movement of the gun barrel, and a connection through uiiitfli said shaft is rotated in the direction to tension them, by longitudinal movement of the gun barrel.

5. In a barrel recoil gun, a lever for opening and closing the breech, an accumulator mlupleti to impart opening movement to said lover, a shaft for tensioning said accumulator, by rotation in one direction on the running-out movement of the gun barrel, a con- Lcction through which sair draft is adapted to impart closing movement to the lever by rotation in the opposite direction and an art amulator tensioncd on the running-out movement of thc gun barrel and adapted to rotate said shaft in vsaid opposite direction.

in n arrel recoil gun, a lever for opening" and closing the breech, an accumulator adapted to impart opening movement to said lifivtt'. a shaft for tensioning said accumul; by rotation in one direction, a, connec- Hou through which said shaft is adapted to :pnz'i tlthlllg movement to the lever by rotation in the opposite direction, an ac i utor adapted to rotate said shaft in l opposite direction, and means for rotating said shaft on the running-out movement oi 1 gun barrel in the direction to tension t arruimilators.

7. in a barrel recoil gun, a lever adapted to open and close the breech, an accumulator spring for opening the breech, a drum having eonnecticm with the lever. and with one end of the opening string, a shaft having mnection with the other end f the pening' spring wherelw it is adapted to tension said spring, and also having a conncction whereby it is adapted tomove the drum in the direction to impart closing movement to the lever. and an accumulator connected with said shaft and adapted to rotate the same in the direction to develo said closing movement, means on the sha t and on a non-recoiling part of the gun for rotating said shaft during the running-out movement of the gun barrel in the direction to tension both accumulators.

8. In a barrel recoil gun, a lever adapted to open and close the breech, an accumulator spring for opening the breech, a drum having connection with the lever and with one end of the opening spring, a shaft having connection with the other end of the opening spring whereby it is adapted to tension said spring, and also having a connection whereby it is adapted to move the drum in the direction to impart closing movement to the lever, and an accumulator connected with said shaft and adapted to rotate the same in the direction to develop said closing movement; said shaft carrying a crank arm, and a stop being mounted upon a nonrecoiling part of the gun, in position to engage said crank arm and rotate the shaft in the direction for tensioning both accumulators.

9. In a barrel recoil gun, a lever adapted to open and close the breech, an accumulator spring for opening the breech, a drum having connection with the lever and with one end of the opening spring, a shaft havingconnection with the other end of the opening spring whereby it is adapted to tension said spring, and also having a connection whereby it is adapted to move the drum in the direction to impart closing movement to the lever, and an accumulator connected with said shaft and adapted to rotate the same in the direction to develop said closing movement, the closing accumulator comprising a coil spring having connection at one end with the tensioning shaft and a sleeve surrounding said spring and connected withzthe other end thereof and non-rotatably connected with the breech of the gun.

10. In a barrel recoil gun, breech actuating mechanism, accumulators adapted respectively to impart opening and closing movements to the breech actuating mechanism, tensioning meaiis common to both said accumulators and actuated by a movement of the gun barrel incident to firing, a,

ratchet adapted to hold said tensioning means in the position to which it is moved,

and means releasing said ratchet, actuated by the opening movement of a part through which the opening accumulator imparts opening movement to the breech, whereby the tensioning means is permitted to return to its initial position under the action of the breech closing accumulator. H

11. In a barrel recoil gun, breech actuating mechanism, accumulators adapted respectively to impart opening and closing movement to the breech actuating mechanism, a tensioning' shaft common to both accumulators, means whereby said tensioning shaft is rotated by a movement incident to the firing of the gun, a ratchet adapted to hold the shaft in tensioning position, a drum through which the opening accumulzr tor imparts opening movement to the breech mechanism and means carried by said drum adapted to release the ratchet at the end of the breech opening movement, whereby the shaft is then free to return to initial position under the action of the closing accumulator.

12. In :1 ha rrel recoil gun, breech opening and closing means, an accumulator for impartingopening movement thereto, a ten" sioning means for said accumulator, a ratchet resisting opening movement until the tensioning movement is completed and means carried by said mnsioning means adapted to release. said ratchet when said tensioning movement is completed.

13. In a barrel recoil gun, a breech opening and closing means, a drum through which opening movement is imparted to said means, a ratchet carried by said drum for resisting opening movement thereof, an accumulator adapted to impart opening movement to said drum, a shaft adapted to tension said accumulator, and a disk carried by said shaft and adapted to release said ratchet When the shaft has completed its tensioning movement, whereby the opening connection can respond to the opening ten sion of said accumulator.

14. In a barrel recoil gun, a tensioning 1 shaft, two accumulators, each connected at one end to said shaft and adapted to be simultaneous'ly tensioned thereby, breech actuating means, a connection through which one of said accumulators imparts opening movement to said breech mechanism, a ratchet restraining the opening movement, a releasing means carried by the shaftadapted to release the opening connection after the tensioning movement is complete, a ratchet adiipted to restrain the tensioning shaft in the position to which it is rotated to tension the accumulators, means carried by the opering connection for disengaging said shaft retaining ratchet when the open ing movement is complete, a means carried by the shaft and en, aginn the breech actuating mechanism through which the shaft imparts closing, movement to the breech mecha nism, when the shaft is rotated backward, and'a connection between the second accumulator and the gun, whereby it isadapt' ed to impart backward or breech closing movement to the shaft.

15. In a barrel recoil gun, a breech opening and closing element, a drum through which said element is rotated in opening: and closin directions, a locking device in resisting tie movement of said drum in the direction of opening the breech, comprising, a ratchet having a toe adapted to enter a seat in a fixed part of the gun barrel an? a projection through which said ratchet may be lifted, an accumulatorspring having coin nection at one end with the drum, through .which it may rotate the drum when the spring is under tension, a shaft through. which said spring is placed under tension and a disk carried by said shaft and having a projection adapted to engage the projection on the ratchet when the tensiciii'rzg movement of the shaft is complete and rai e the ratchet to release the drum and permit the latter to receive opening movement under the action of the spring.

16. In a barrel recoil gun. a breech open ing and closing element, a drum through which said element is moved, an accumulator spring connected at one end to said drum and adapted to impart movement thereto in the direction to open the breech, a tensioning shaft, a tensioning disk nonrotetably connected to said shaft and having connection with the other end of said 0 ening spring, and a ratchet carried b r a xed part of the gun and adapted to hold the disk and through it the shaft in tensionin; position; said ratchet being engaged by the drum at the completion of the opening movement and released so that the shaft may rotate in the direction opposite to ten sioning during the closing movement of the breech.

17. In a barrel recoil gun, a member through which opening movement is imparted to the breech closure, an accumulator adapted to impart opening movement to said member, a shaft adapted to tension said accumulator by the running-out movement of the gun barrel in the direction to develop said opening movement, a second accumulator having connections with said shaft and With a fixed part of the gun which adapts it to be tensioned by said shaft,simultaneously with the first named accumulator, a handle connected with the opening member through which it may be actuated by hand, and a connection between said opening member and the tcnsioning shaft which causes said memer and shaft to move together and. the second accumulator to be tensioned when the breech is opened by hand.

18. In a barrel recoil gun, a breech open-- ing and closing member, an accumulator adapted to impart opening movement, an a cumulator adapted to impart closing movement, a shaft for tensioning both said accumulators, a drum through which opening and closing movements are imparted to -the breech closure, a tensioning disk through which teusioning movement is imparted to the opening wring, a projection on said lcnsiuuing (link extending through the wall of the (lrnm and having it illlliiPll lnm'cnwnt therein, a, clutch holt mounted in the un lmrrnl in position to engage the projcclifin on lhc tcnniiming disk when the lcnsioning movement is complete and means rnrrienl h the drum adapted to actuate said hnlt \vhcn the opening moron'ieut of the breech closure is completed nml thereby release the tensi n ng shaft and permit it to return to initial position under the action of the breech closing accumulator.

19. A recoil gun having a recuperator, n breech opening accumulator anil breech ClUS ing accumulator, and means wherel'iy both accumulators are tensioned during the running-out movement of the gun barrel, :1 hand lever adapted to open und'close the breech, said breech opening accumulator comprising a torsion spring, a drum having connection with said lever and with one end of said torsion spring, a shaft, a disk lmving rolnting connection with said shaft, will aring, (irum 21ml (lisk being 50 mount- ((1 on hzliil shaft that they together may be ['(lllUYWl from said shaft with the Spring under ilh--,i()li.

Qt). A recoil gun having :1 z'cruperntor, a hl'QUi'll opening accumulator :unl breech closlug urruuiulnlm and nit-ans \i'hereby both i ;H'lIElI!ll;lll)lS are tcusrioneil during the run- 'ning' wut mm'en'ient of the gun lmrrel, a llulHl lvrcr adapted t open and close the breech. biliti hrecch rinsing accumulator rnmprising a torsion spring, a shaft an( l a sleeve, said spring. shaft and sleeve being i l l l adapted to be together removed from the gun with the saul spring: under tension.

The foregolng -SPOCIfiCEIiIUH signed at Bnrnien, (,hrrmuny, this 12th day of Junnary, 1911.

MAX HERMSDORF. In presence of CHAS. J. Wmonr, Anrnnn HENKBL. 

